....................................../////.===Shadow-Here===./////................................................ > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < ------------------------------------------------------------------------------------------------------------------- /////////////////////////////////////////////////////////////////////////////////////////////////////////////////// RIFF¤ WEBPVP8 ˜ ðÑ *ôô>‘HŸK¥¤"§£±¨àð enü¹%½_F‘åè¿2ºQú³íªú`N¿­3ÿƒügµJžaÿ¯ÿ°~¼ÎùnúîÞÖô•òíôÁÉß®Sm¥Ü/ ‡ó˜f£Ùà<˜„xëJ¢Ù€SO3x<ªÔ©4¿+ç¶A`q@Ì“Úñè™ÍÿJÌ´ª-˜ÆtÊÛL]Ïq*‘Ý”ì#ŸÌÏãY]@ê`¿ /ªfkØB4·®£ó z—Üw¥Pxù–ÞLШKÇN¾AkÙTf½è'‰g gÆv›Øuh~ a˜Z— ïj*á¥t d£“uÒ ¨`K˜¹ßþ]b>˜]_ÏÔ6W—è2r4x•íÖ…"ƒÖNîä!¦å Ú}ýxGøÌ —@ ;ÆÚŠ=ɾ1ý8lªË¥ô ^yf®Œ¢u&2©nÙÇ›ñÂñŒ³ aPo['½»øFùà­+4ê“$!lövlüÞ=;N®3ð‚õ›DÉKòÞ>ÄÍ ¥ˆuߤ#ˆ$6ù™¥îŠ‡y’ÍB¼ çxÛ;X"WL£R÷͝*ó-¶Zu}º.s¸sšXqù–DþÿvªhüïwyŸ ¯é³lÀ:KCûÄ£Ëá\…­ ~—ýóî ¼ûûÜTÓüÇy…ŽÆvc»¾×U ñ¸žþоP÷¦ó:Ò¨¨5;Ð#&#ÖúñläÿÁœ GxÉ­/ñ‡áQðìYÉtÒwŽ¼GÔ´zàÒò ð*ëzƒ•4~H]Ø‹f ñÓÈñ`NåWçs'ÆÏW^ø¹!XžµmQ5ÃËoLœÎ: ÞËÍ¥J ù…î èo£ßPÎñ¶ž8.Œ]ʵ~5›ÙË-ù*8ÙÖß±~ ©¹rÓê‚j¶d¸{^Q'˜±Crß ÚH—#¥¥QlÀ×ëã‡DÜ«èî þ&Çæžî;ŽÏºò6ÒLÃXy&ZŒ'j‚¢Ù€IßÚù+–MGi‰*jE€‘JcÜ ÓÌ EÏÚj]o˜ Þr <¾U ûŪæÍ/šÝH¥˜b”¼ ÁñßX GP›ï2›4WŠÏà×£…íÓk†¦H·ÅíMh–*nó÷à]ÁjCº€b7<ب‹¨5車bp2:Á[UªM„QŒçiNMa#<5›áËó¸HýÊ"…×Éw¹¦ì2º–x<›»a±¸3Weü®FÝ⑱ö–î–³|LPÈ~çð~Çå‡|º kD¢µÏàÆAI %1À% ¹Ò – ”ϝS¦‰4&¶£°à Öý”û_Ò Áw°A«Å€?mÇÛgHÉ/8)á¾ÛìáöŽP í¨PŸNÙµº¦‡§Ùš"ÿ«>+ªÕ`Ê÷‡‚ß Õû˜þãÇ-PÍ.¾XV‘€ dÜ"þ4¹ ±Oú‘©t¥¦FªÄÃÄ•b‚znýu½—#cDs˜ÃiÑOˆñ×QO=*IAÊ,¶ŽZƒ;‡wøXè%EÐk:F±Ú” .Ѽ+Áu&Ç`."pÈÉw o&¿dE6‘’EqTuK@Ì¥ã™À(Êk(h‰,H}RÀIXÛš3µ1©_OqÚÒJAñ$ÊÙÜ;D3çŒ[þùœh¬Ã³™ö6ç†NY".Ú‰ï[ªŸŒ '²Ð öø_¨ÂÉ9u鶳ÒŠõTàîMØ#û¯gN‡bÙ놚X„ö …ÉeüÌ^J ‹€.œ$Æ)βÄeæW#óüßĺŸ€ ÀzwV 9oä»f4V*uB «Ë†¹ì¯žR霓æHXa=&“I4K;¯ç‹h×·"UŠ~<•â•ªVêª&ÍSÃÆÅ?ÔqÎ*mTM ˜›µwêd#[C¡©§‘D<©àb†–ÁœøvH/,í:¯( ²£|4-„Æövv„Yͼ™^Á$ˆ„¢Û[6yB.åH*V¨æ?$=˜Ñ€•î¦ñ·­(VlŸ‘ nÀt8W÷´Bûba?q9ú¶Xƒl«ÿ\ù¶’þòUÐj/õ¢Ìµ³g$ƒÎR!¸»|Oߍë’BhîÚÑ¢ñåŒJ„®„£2Ð3•ô02Nt…!£Í]Ïc½Qÿ?ˆ<&ÃA¾Ú,JˆijÌ#5yz„‰Î|ÊŽ5QÏ:‹ÐaóVÔxW—CpeÏzÐïíçôÿÅ_[hãsÐ_/ŽTÝ?BîˆííV$<¿i>²F¬_Eß¿ †bÊŒº­ÿ®Z H“C}”¬,Mp ý/Bá£w>˜YV°aƒúh+cŠ- r/[%|üUMHäQ°X»|û/@|°¥Ð !BÔ Ç¢Ä©š+Õì D«7ìN¶ŽðÔ " ƶ’ÖçtA‰Û×}{tþz­¾GÍ›k¹OEJR$ Â׃ «ëÁ"oÉôž$oUK(Ä)Ãz³Ê-‹êN[Ò3Œñbï8P 4ƒ×q¢bo|?<ÛX¬òÄÍ°L–±›(™ûG?ýË©ÚÄ–ÂDØÐ_Ç¡ô ¾–ÄÏø ×e8Ë©$ÄF¹Å‹ì[©óìl:F¾f´‹‹Xì²ï®\¬ôùƒ ÿat¥óèÒùHß0äe‚;ü×h:ÆWðHž=Ã8骣"kœ'Y?³}Tûè€>?0l›e1Lòñ„aæKÆw…hÖŠùW…ÈÆÄ0ši·›[pcwËþñiêíY/~-Á5˜!¿†A›™Mÿþ(±“t@â“ö2­´TG5yé]çå僳 .·ÍïçÝ7UÚ±Ð/Nè»,_Ï ùdj7\ï Wì4›„»c¸àešg#ÒÊ⥭áØo5‘?ÌdÝô¯ ¹kzsƒ=´#ëÉK›Ø´±-¥eW?‡çßtòTã…$Ý+qÿ±ƒ÷_3Ô¥í÷:æ–ž<·Ö‡‰Å¢ š‡%Ô—utÌÈìðžgÖÀz²À—ï÷Óîäõ{K'´È÷³yaÏÁjƒô}ž§®æÊydÕÈë5¯èˆõvÕ©ã*çD„ “z„Ó‡^^xÂ3M§A´JG‚öï 3W'ˆ.OvXè¡ÊÕª?5º7†˜(˜Ç¶#çê’¶!ÌdZK§æ 0fãaN]òY³RV ™î$®K2R¨`W!1Ôó\;Ý ýB%qæK•&ÓÈe9È0êI±žeŸß -ú@žQr¦ ö4»M¼Áè¹µmw 9 EÆE_°2ó„ŸXKWÁ×Hóì^´²GѝF©óäR†¦‰ç"V»eØ<3ùd3ÿÚ¤Žú“Gi" —‘_ÙËÎ~Üö¯¥½Î»üŸEÚŽåmÞþí ;ÞólËΦMzA"Âf(´òá;Éï(/7½ûñÌ­cïÕçлþÝz¾-ÍvÑ“pH­–ðÓj$¸Äû¤‚‘ãUBË-n“2åPkS5&‹Â|+g^œ®Ì͆d!OïäîU«c;{Û!ÅŽ«ëZ9Ókóˆ]¯ƒ›né `ÇÒ+tÆš (ØKá¾—=3œ®•vuMñg²\ï Ec€ 05±d™‡×iÇ×›UúvÌ¢£Èþ¡ÕØô¶ßÎA"ß±#Ö²ˆÊŸ¦*Ä~ij|àø.-¼'»Ú¥£h ofº¦‡VsR=N½„Î v˜Z*SÌ{=jÑB‹tê…;’HžH¯8–îDù8ñ¢|Q•bÛçš–‹m³“ê¨ åÏ^m¬Žãþ©ïêO‡½6] µÆ„Ooòü ²x}N¦Ë3ïé¿»€›HA˜m%çÞ/¿í7Fø“‹léUk)É°Œµ8Q8›:ÀŠeT*šõ~ôڝG6 ¢}`ùH­–”¡k ‰P1>š†®9z11!X wKfmÁ¦xÑ,N1Q”–æB¶M…ÒÃv6SMˆhU¬ÊPŽï‘öj=·CŒ¯u¹ƒVIЃsx4’ömÛýc塶7ßŠß 57^\wÒÐÆ k§h,Œý î«q^R½3]J¸ÇðN ‚çU¬ôº^Áì} ³f©Õœ§ˆã:FÄÈ‚é(€™?àýÓüè1Gô£¼éj‚OÅñ  #>×—ßtà 0G¥Åa뀐kßhc™À_ÉñÞ#±)GD" YîäË-ÿÙ̪ ¹™a¯´¢E\ÝÒö‚;™„ë]_ p8‰o¡ñ+^÷ 3‘'dT4œŽ ðVë½° :¬víÑ«£tßÚS-3¶“þ2 †üüʨòrš¹M{É_¤`Û¨0ìjœøJ‡:÷ÃáZ˜†@GP&œÑDGÏs¡þ¦þDGú‘1Yá9Ôþ¼ ûø…§÷8&–ÜÑnÄ_m®^üÆ`;ÉVÁJ£?â€-ßê}suÍ2sõA NÌúA磸‘îÿÚ»ƒìö·á¿±tÑÐ"Tÿü˜[@/äj¬€uüªìù¥Ý˜á8Ý´sõj 8@rˆð äþZÇD®ÿUÏ2ùôõrBzÆÏÞž>Ì™xœ“ wiÎ×7_… ¸ \#€MɁV¶¥üÕÿPÔ9Z‡ø§É8#H:ƒ5ÀÝå9ÍIŒ5åKÙŠ÷qÄ>1AÈøžj"µÂд/ªnÀ qªã}"iŸBå˜ÓÛŽ¦…&ݧ;G@—³b¯“•"´4í¨ôM¨åñC‹ïùÉó¯ÓsSH2Ý@ßáM‡ˆKÀªÛUeø/4\gnm¥‹ŸŒ qÄ b9ÞwÒNÏ_4Ég³ú=܆‚´ •â¥õeíþkjz>éÚyU«Íӝ݃6"8/ø{=Ô¢»G¥ äUw°W«,ô—¿ãㆅү¢³xŠUû™yŒ (øSópÐ 9\åTâ»—*oG$/×ÍT†Y¿1¤Þ¢_‡ ¼ „±ÍçèSaÓ 3ÛMÁBkxs‰’R/¡¤ˆÙçª(*õ„üXÌ´ƒ E§´¬EF"Ù”R/ÐNyÆÂ^°?™6¡œïJ·±$§?º>ÖüœcNÌù¯G ‹ñ2ŠBB„^·úìaz¨k:#¨Æ¨8LÎõލ£^§S&cŒÐU€ü(‡F±Š¼&P>8ÙÁ ‰ p5?0ÊƃZl¸aô š¼¡}gÿ¶zÆC²¹¬ÎÖG*HB¡O<º2#ñŒAƒ–¡B˜´É$¥›É:FÀÔx¾u?XÜÏÓvN©RS{2ʈãk9rmP¼Qq̳ è¼ÐFׄ^¡Öì fE“F4A…!ì/…¦Lƒ… … $%´¾yã@CI¬ á—3PþBÏNÿ<ý°4Ü ËÃ#ØÍ~âW«rEñw‹eùMMHß²`¬Öó½íf³:‹k˜¯÷}Z!ã¿<¥,\#öµÀ¯aÒNÆIé,Ћ–lŽ#Àæ9ÀÒS·I’½-Ïp Äz¤Š Â* ­íÄ9­< h>׍3ZkËU¹§˜ŒŠ±f­’¤º³Q ÏB?‹#µíÃ¥®@(Gs«†vI¥Mµ‹Á©e~2ú³ÁP4ìÕi‚²Ê^ö@-DþÓàlÜOÍ]n"µã:žpsŽ¢:! Aõ.ç~ÓBûH÷JCÌ]õVƒd «ú´QÙEA–¯¯Œ!.ˆˆëQ±ù œ·Ì!Õâ )ùL„ÅÀlÚè5@B…o´Æ¸XÓ&Û…O«˜”_#‡ƒ„ûÈt!¤ÁÏ›ÎÝŠ?c9 â\>lÓÁVÄÑ™£eØY]:fÝ–—ù+p{™ðè û³”g±OƒÚSù£áÁÊ„ä,ï7š²G ÕÌBk)~ÑiCµ|h#u¤¶îK¨² #²vݯGãeÖ϶ú…¾múÀ¶þÔñ‚Š9'^($¤§ò “š½{éúp÷J›ušS¹áªCÂubÃH9™D™/ZöØÁ‡¦ÝÙŸ·kð*_”.C‹{áXó€‡c¡c€§/šò/&éš÷,àéJþ‰X›fµ“C¨œ®r¬"kL‰Â_q…Z–.ÉL~O µ›zn‚¹À¦Öª7\àHµšÖ %»ÇníV[¥*Õ;ƒ#½¾HK-ÖIÊdÏEÚ#=o÷Óò³´Š: Ç?{¾+9›–‘OEáU·S€˜j"ÄaÜ ŒÛWt› á–c#a»pÔZÞdŽtWê=9éöÊ¢µ~ ë ;Öe‡Œ®:bî3±ýê¢wà¼îpêñ¹¾4 zc¾ðÖÿzdêŒÑÒŝÀ‰s6¤í³ÎÙB¿OZ”+F¤á‡3@Ñëäg©·Ž ˆèª<ù@É{&S„œÕúÀA)‰h:YÀ5^ÂÓŒ°õäU\ ùËÍû#²?Xe¬tu‰^zÒÔãë¼ÛWtEtû …‚g¶Úüâî*moGè¨7%u!]PhÏd™Ý%Îx: VÒ¦ôÊD3ÀŽKÛËãvÆî…N¯ä>Eró–ð`5 Œ%u5XkñÌ*NU%¶áœÊ:Qÿú»“úzyÏ6å-၇¾ ´ ÒÊ]y žO‘w2Äøæ…H’²f±ÎÇ.ª|¥'gîV•Ü .̘¯€šòü¤U~Ù†*¢!?ò wý,}´°ÔÞnïoKq5µb!áÓ3"vAßH¡³¡·G(ÐÎ0Îò¼MG!/ài®@—¬04*`…«é8ªøøló“ˆÊ”èù¤…ßÊoÿé'ËuÌÖ5×È¡§ˆˆfŽë9}hìâ_!!¯  B&Ëö¶‰ÀAÙNVŸ Wh›¸®XÑJì¨ú“¿÷3uj²˜¨ÍÎìë±aúŠÝå¯ð*Ó¨ôJ“yºØ)m°WýOè68†ŸÏ2—‰Ïüꪫٚ¥‹l1 ø ÏÄFjêµvÌbü¦èÝx:X±¢H=MÐß—,ˆÉÇ´(9ú¾^ÅÚ4¿m‡$âX‘å%(AlZo@½¨UOÌÕ”1ø¸jÎÀÃÃ_ µ‘Ü.œº¦Ut: Æï’!=¯uwû#,“pþÇúŒø(é@?³ü¥‘Mo §—s@Œ#)§ŒùkL}NOÆêA›¸~r½¼ÙA—HJ«eˆÖ´*¡ÓpÌŸö.m<-"³ûÈ$¬_6­åf£ïÚâj1y§ÕJ½@dÞÁr&Í\Z%D£Íñ·AZ Û³øüd/ªAi†/Й~  ‡âĮҮÏh§°b—›Û«mJžòG'[ÈYýŒ¦9psl ýÁ ®±f¦x,‰½tN ‚Xª9 ÙÖH.«Lo0×?͹m¡å†Ѽ+›2ƒF ±Ê8 7Hցϓ²Æ–m9…òŸï]Â1äN†VLâCˆU .ÿ‰Ts +ÅÎx(%¦u]6AF Š ØF鈄‘ |¢¶c±soŒ/t[a¾–û:s·`i햍ê›ËchÈ…8ßÀUÜewŒðNOƒõD%q#éû\9¤x¹&UE×G¥ Í—™$ð E6-‡¼!ýpãÔM˜ Âsìe¯ñµK¢Ç¡ùôléœ4Ö£”À Š®Ðc ^¨À}ÙËŸ§›ºê{ÊuÉC ×Sr€¤’fÉ*j!úÓ’Gsùìoîßîn%ò· àc Wp÷$¨˜)û»H ×8ŽÒ€Zj¤3ÀÙºY'Ql¦py{-6íÔCeiØp‘‡XÊîÆUߢ܂ž£Xé¼Y8þ©ëgñß}é.ÎógÒ„ÃØËø¯»™§Xýy M%@NŠ À(~áÐvu7&•,Ù˜ó€uP‡^^®=_E„jt’ 403WebShell
403Webshell
Server IP : 217.79.180.202  /  Your IP : 216.73.216.109
Web Server : Apache
System : Linux vps2460721.fastwebserver.de 5.15.0-122-generic #132-Ubuntu SMP Thu Aug 29 13:45:52 UTC 2024 x86_64
User : tecnoelite ( 1001)
PHP Version : 8.1.2-1ubuntu2.18
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : OFF  |  Sudo : ON  |  Pkexec : ON
Directory :  /lib/ruby/3.0.0/rinda/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :

[ Back ]     

Current File : /lib/ruby/3.0.0/rinda/ring.rb
# frozen_string_literal: false
#
# Note: Rinda::Ring API is unstable.
#
require 'drb/drb'
require_relative 'rinda'
require 'ipaddr'

module Rinda

  ##
  # The default port Ring discovery will use.

  Ring_PORT = 7647

  ##
  # A RingServer allows a Rinda::TupleSpace to be located via UDP broadcasts.
  # Default service location uses the following steps:
  #
  # 1. A RingServer begins listening on the network broadcast UDP address.
  # 2. A RingFinger sends a UDP packet containing the DRb URI where it will
  #    listen for a reply.
  # 3. The RingServer receives the UDP packet and connects back to the
  #    provided DRb URI with the DRb service.
  #
  # A RingServer requires a TupleSpace:
  #
  #   ts = Rinda::TupleSpace.new
  #   rs = Rinda::RingServer.new
  #
  # RingServer can also listen on multicast addresses for announcements.  This
  # allows multiple RingServers to run on the same host.  To use network
  # broadcast and multicast:
  #
  #   ts = Rinda::TupleSpace.new
  #   rs = Rinda::RingServer.new ts, %w[Socket::INADDR_ANY, 239.0.0.1 ff02::1]

  class RingServer

    include DRbUndumped

    ##
    # Special renewer for the RingServer to allow shutdown

    class Renewer # :nodoc:
      include DRbUndumped

      ##
      # Set to false to shutdown future requests using this Renewer

      attr_writer :renew

      def initialize # :nodoc:
        @renew = true
      end

      def renew # :nodoc:
        @renew ? 1 : true
      end
    end

    ##
    # Advertises +ts+ on the given +addresses+ at +port+.
    #
    # If +addresses+ is omitted only the UDP broadcast address is used.
    #
    # +addresses+ can contain multiple addresses.  If a multicast address is
    # given in +addresses+ then the RingServer will listen for multicast
    # queries.
    #
    # If you use IPv4 multicast you may need to set an address of the inbound
    # interface which joins a multicast group.
    #
    #   ts = Rinda::TupleSpace.new
    #   rs = Rinda::RingServer.new(ts, [['239.0.0.1', '9.5.1.1']])
    #
    # You can set addresses as an Array Object.  The first element of the
    # Array is a multicast address and the second is an inbound interface
    # address.  If the second is omitted then '0.0.0.0' is used.
    #
    # If you use IPv6 multicast you may need to set both the local interface
    # address and the inbound interface index:
    #
    #   rs = Rinda::RingServer.new(ts, [['ff02::1', '::1', 1]])
    #
    # The first element is a multicast address and the second is an inbound
    # interface address.  The third is an inbound interface index.
    #
    # At this time there is no easy way to get an interface index by name.
    #
    # If the second is omitted then '::1' is used.
    # If the third is omitted then 0 (default interface) is used.

    def initialize(ts, addresses=[Socket::INADDR_ANY], port=Ring_PORT)
      @port = port

      if Integer === addresses then
        addresses, @port = [Socket::INADDR_ANY], addresses
      end

      @renewer = Renewer.new

      @ts = ts
      @sockets = []
      addresses.each do |address|
        if Array === address
          make_socket(*address)
        else
          make_socket(address)
        end
      end

      @w_services = write_services
      @r_service  = reply_service
    end

    ##
    # Creates a socket at +address+
    #
    # If +address+ is multicast address then +interface_address+ and
    # +multicast_interface+ can be set as optional.
    #
    # A created socket is bound to +interface_address+.  If you use IPv4
    # multicast then the interface of +interface_address+ is used as the
    # inbound interface.  If +interface_address+ is omitted or nil then
    # '0.0.0.0' or '::1' is used.
    #
    # If you use IPv6 multicast then +multicast_interface+ is used as the
    # inbound interface.  +multicast_interface+ is a network interface index.
    # If +multicast_interface+ is omitted then 0 (default interface) is used.

    def make_socket(address, interface_address=nil, multicast_interface=0)
      addrinfo = Addrinfo.udp(address, @port)

      socket = Socket.new(addrinfo.pfamily, addrinfo.socktype,
                          addrinfo.protocol)

      if addrinfo.ipv4_multicast? or addrinfo.ipv6_multicast? then
        if Socket.const_defined?(:SO_REUSEPORT) then
          socket.setsockopt(:SOCKET, :SO_REUSEPORT, true)
        else
          socket.setsockopt(:SOCKET, :SO_REUSEADDR, true)
        end

        if addrinfo.ipv4_multicast? then
          interface_address = '0.0.0.0' if interface_address.nil?
          socket.bind(Addrinfo.udp(interface_address, @port))

          mreq = IPAddr.new(addrinfo.ip_address).hton +
            IPAddr.new(interface_address).hton

          socket.setsockopt(:IPPROTO_IP, :IP_ADD_MEMBERSHIP, mreq)
        else
          interface_address = '::1' if interface_address.nil?
          socket.bind(Addrinfo.udp(interface_address, @port))

          mreq = IPAddr.new(addrinfo.ip_address).hton +
            [multicast_interface].pack('I')

          socket.setsockopt(:IPPROTO_IPV6, :IPV6_JOIN_GROUP, mreq)
        end
      else
        socket.bind(addrinfo)
      end

      socket
    rescue
      socket = socket.close if socket
      raise
    ensure
      @sockets << socket if socket
    end

    ##
    # Creates threads that pick up UDP packets and passes them to do_write for
    # decoding.

    def write_services
      @sockets.map do |s|
        Thread.new(s) do |socket|
          loop do
            msg = socket.recv(1024)
            do_write(msg)
          end
        end
      end
    end

    ##
    # Extracts the response URI from +msg+ and adds it to TupleSpace where it
    # will be picked up by +reply_service+ for notification.

    def do_write(msg)
      Thread.new do
        begin
          tuple, sec = Marshal.load(msg)
          @ts.write(tuple, sec)
        rescue
        end
      end
    end

    ##
    # Creates a thread that notifies waiting clients from the TupleSpace.

    def reply_service
      Thread.new do
        loop do
          do_reply
        end
      end
    end

    ##
    # Pulls lookup tuples out of the TupleSpace and sends their DRb object the
    # address of the local TupleSpace.

    def do_reply
      tuple = @ts.take([:lookup_ring, nil], @renewer)
      Thread.new { tuple[1].call(@ts) rescue nil}
    rescue
    end

    ##
    # Shuts down the RingServer

    def shutdown
      @renewer.renew = false

      @w_services.each do |thread|
        thread.kill
        thread.join
      end

      @sockets.each do |socket|
        socket.close
      end

      @r_service.kill
      @r_service.join
    end

  end

  ##
  # RingFinger is used by RingServer clients to discover the RingServer's
  # TupleSpace.  Typically, all a client needs to do is call
  # RingFinger.primary to retrieve the remote TupleSpace, which it can then
  # begin using.
  #
  # To find the first available remote TupleSpace:
  #
  #   Rinda::RingFinger.primary
  #
  # To create a RingFinger that broadcasts to a custom list:
  #
  #   rf = Rinda::RingFinger.new  ['localhost', '192.0.2.1']
  #   rf.primary
  #
  # Rinda::RingFinger also understands multicast addresses and sets them up
  # properly.  This allows you to run multiple RingServers on the same host:
  #
  #   rf = Rinda::RingFinger.new ['239.0.0.1']
  #   rf.primary
  #
  # You can set the hop count (or TTL) for multicast searches using
  # #multicast_hops.
  #
  # If you use IPv6 multicast you may need to set both an address and the
  # outbound interface index:
  #
  #   rf = Rinda::RingFinger.new ['ff02::1']
  #   rf.multicast_interface = 1
  #   rf.primary
  #
  # At this time there is no easy way to get an interface index by name.

  class RingFinger

    @@broadcast_list = ['<broadcast>', 'localhost']

    @@finger = nil

    ##
    # Creates a singleton RingFinger and looks for a RingServer.  Returns the
    # created RingFinger.

    def self.finger
      unless @@finger
        @@finger = self.new
        @@finger.lookup_ring_any
      end
      @@finger
    end

    ##
    # Returns the first advertised TupleSpace.

    def self.primary
      finger.primary
    end

    ##
    # Contains all discovered TupleSpaces except for the primary.

    def self.to_a
      finger.to_a
    end

    ##
    # The list of addresses where RingFinger will send query packets.

    attr_accessor :broadcast_list

    ##
    # Maximum number of hops for sent multicast packets (if using a multicast
    # address in the broadcast list).  The default is 1 (same as UDP
    # broadcast).

    attr_accessor :multicast_hops

    ##
    # The interface index to send IPv6 multicast packets from.

    attr_accessor :multicast_interface

    ##
    # The port that RingFinger will send query packets to.

    attr_accessor :port

    ##
    # Contain the first advertised TupleSpace after lookup_ring_any is called.

    attr_accessor :primary

    ##
    # Creates a new RingFinger that will look for RingServers at +port+ on
    # the addresses in +broadcast_list+.
    #
    # If +broadcast_list+ contains a multicast address then multicast queries
    # will be made using the given multicast_hops and multicast_interface.

    def initialize(broadcast_list=@@broadcast_list, port=Ring_PORT)
      @broadcast_list = broadcast_list || ['localhost']
      @port = port
      @primary = nil
      @rings = []

      @multicast_hops = 1
      @multicast_interface = 0
    end

    ##
    # Contains all discovered TupleSpaces except for the primary.

    def to_a
      @rings
    end

    ##
    # Iterates over all discovered TupleSpaces starting with the primary.

    def each
      lookup_ring_any unless @primary
      return unless @primary
      yield(@primary)
      @rings.each { |x| yield(x) }
    end

    ##
    # Looks up RingServers waiting +timeout+ seconds.  RingServers will be
    # given +block+ as a callback, which will be called with the remote
    # TupleSpace.

    def lookup_ring(timeout=5, &block)
      return lookup_ring_any(timeout) unless block_given?

      msg = Marshal.dump([[:lookup_ring, DRbObject.new(block)], timeout])
      @broadcast_list.each do |it|
        send_message(it, msg)
      end
      sleep(timeout)
    end

    ##
    # Returns the first found remote TupleSpace.  Any further recovered
    # TupleSpaces can be found by calling +to_a+.

    def lookup_ring_any(timeout=5)
      queue = Thread::Queue.new

      Thread.new do
        self.lookup_ring(timeout) do |ts|
          queue.push(ts)
        end
        queue.push(nil)
      end

      @primary = queue.pop
      raise('RingNotFound') if @primary.nil?

      Thread.new do
        while it = queue.pop
          @rings.push(it)
        end
      end

      @primary
    end

    ##
    # Creates a socket for +address+ with the appropriate multicast options
    # for multicast addresses.

    def make_socket(address) # :nodoc:
      addrinfo = Addrinfo.udp(address, @port)

      soc = Socket.new(addrinfo.pfamily, addrinfo.socktype, addrinfo.protocol)
      begin
        if addrinfo.ipv4_multicast? then
          soc.setsockopt(Socket::Option.ipv4_multicast_loop(1))
          soc.setsockopt(Socket::Option.ipv4_multicast_ttl(@multicast_hops))
        elsif addrinfo.ipv6_multicast? then
          soc.setsockopt(:IPPROTO_IPV6, :IPV6_MULTICAST_LOOP, true)
          soc.setsockopt(:IPPROTO_IPV6, :IPV6_MULTICAST_HOPS,
                         [@multicast_hops].pack('I'))
          soc.setsockopt(:IPPROTO_IPV6, :IPV6_MULTICAST_IF,
                         [@multicast_interface].pack('I'))
        else
          soc.setsockopt(:SOL_SOCKET, :SO_BROADCAST, true)
        end

        soc.connect(addrinfo)
      rescue Exception
        soc.close
        raise
      end

      soc
    end

    def send_message(address, message) # :nodoc:
      soc = make_socket(address)

      soc.send(message, 0)
    rescue
      nil
    ensure
      soc.close if soc
    end

  end

  ##
  # RingProvider uses a RingServer advertised TupleSpace as a name service.
  # TupleSpace clients can register themselves with the remote TupleSpace and
  # look up other provided services via the remote TupleSpace.
  #
  # Services are registered with a tuple of the format [:name, klass,
  # DRbObject, description].

  class RingProvider

    ##
    # Creates a RingProvider that will provide a +klass+ service running on
    # +front+, with a +description+.  +renewer+ is optional.

    def initialize(klass, front, desc, renewer = nil)
      @tuple = [:name, klass, front, desc]
      @renewer = renewer || Rinda::SimpleRenewer.new
    end

    ##
    # Advertises this service on the primary remote TupleSpace.

    def provide
      ts = Rinda::RingFinger.primary
      ts.write(@tuple, @renewer)
    end

  end

end

Youez - 2016 - github.com/yon3zu
LinuXploit